Related Experiment Video
Updated: Jun 28, 2026

Characterization of a Pathogenic Escherichia coli Strain Derived from Oreochromis spp. Farms Using Whole-Genome Sequencing
Published on: December 23, 2022
Escherichia coli O125ac:H6 encompasses atypical enteropathogenic E. coli strains that display the aggregative
Samar F Barros1, Cecilia M Abe, Sérgio P D Rocha
1Laboratório de Bacteriologia, Instituto Butantan, São Paulo, Brazil.
Abstract:
O125 is an enteropathogenic Escherichia coli (EPEC) serogroup, which includes the O125ac:H6 serotype, defined as atypical EPEC. Strains of this serotype displayed the aggregative adherence (AA) pattern with HEp-2, Caco-2, T84, and HT-29 cells, possessed all the LEE region genes, and expressed intimin, Tir, and EspABD, although the attaching-effacing lesion was not detected in vitro. These results confirm that E. coli O125ac:H6 is atypical EPEC that displays the AA pattern and indicate the necessity of testing for EPEC genes combined with the determination of the adherence pattern for atypical EPEC identification.
Related Concept Videos
Bacterial Gastroenteritis
Stringent Response in E. coli
Chemotaxis in E. coli
Cholera
Adherens Junctions
Adherens Junctions are Dynamic
The endothelial cells...

